Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 2 | * battery.c - ACPI Battery Driver (Revision: 2.0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 4 | * Copyright (C) 2007 Alexey Starikovskiy <astarikovskiy@suse.de> |
| 5 | * Copyright (C) 2004-2007 Vladimir Lebedev <vladimir.p.lebedev@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
| 7 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| 8 | * |
| 9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or (at |
| 14 | * your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, but |
| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License along |
| 22 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 23 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
| 24 | * |
| 25 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 26 | */ |
| 27 | |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/init.h> |
| 31 | #include <linux/types.h> |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 32 | #include <linux/jiffies.h> |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 33 | |
| 34 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include <linux/proc_fs.h> |
| 36 | #include <linux/seq_file.h> |
| 37 | #include <asm/uaccess.h> |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 38 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
| 40 | #include <acpi/acpi_bus.h> |
| 41 | #include <acpi/acpi_drivers.h> |
| 42 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 43 | #include <linux/power_supply.h> |
| 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF |
| 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #define ACPI_BATTERY_COMPONENT 0x00040000 |
| 48 | #define ACPI_BATTERY_CLASS "battery" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #define ACPI_BATTERY_DEVICE_NAME "Battery" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #define ACPI_BATTERY_NOTIFY_STATUS 0x80 |
| 51 | #define ACPI_BATTERY_NOTIFY_INFO 0x81 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #define _COMPONENT ACPI_BATTERY_COMPONENT |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 54 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 55 | ACPI_MODULE_NAME("battery"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Len Brown | f52fd66 | 2007-02-12 22:42:12 -0500 | [diff] [blame] | 57 | MODULE_AUTHOR("Paul Diefenbaugh"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 58 | MODULE_AUTHOR("Alexey Starikovskiy <astarikovskiy@suse.de>"); |
Len Brown | 7cda93e | 2007-02-12 23:50:02 -0500 | [diff] [blame] | 59 | MODULE_DESCRIPTION("ACPI Battery Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | MODULE_LICENSE("GPL"); |
| 61 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 62 | static unsigned int cache_time = 1000; |
| 63 | module_param(cache_time, uint, 0644); |
| 64 | MODULE_PARM_DESC(cache_time, "cache time in milliseconds"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 65 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 66 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 67 | extern struct proc_dir_entry *acpi_lock_battery_dir(void); |
| 68 | extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir); |
| 69 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 70 | enum acpi_battery_files { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 71 | info_tag = 0, |
| 72 | state_tag, |
| 73 | alarm_tag, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 74 | ACPI_BATTERY_NUMFILES, |
| 75 | }; |
| 76 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 77 | #endif |
| 78 | |
| 79 | static const struct acpi_device_id battery_device_ids[] = { |
| 80 | {"PNP0C0A", 0}, |
| 81 | {"", 0}, |
| 82 | }; |
| 83 | |
| 84 | MODULE_DEVICE_TABLE(acpi, battery_device_ids); |
| 85 | |
| 86 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 87 | struct acpi_battery { |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 88 | struct mutex lock; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 89 | struct power_supply bat; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 90 | struct acpi_device *device; |
| 91 | unsigned long update_time; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 92 | int current_now; |
| 93 | int capacity_now; |
| 94 | int voltage_now; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 95 | int design_capacity; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 96 | int full_charge_capacity; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 97 | int technology; |
| 98 | int design_voltage; |
| 99 | int design_capacity_warning; |
| 100 | int design_capacity_low; |
| 101 | int capacity_granularity_1; |
| 102 | int capacity_granularity_2; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 103 | int alarm; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 104 | char model_number[32]; |
| 105 | char serial_number[32]; |
| 106 | char type[32]; |
| 107 | char oem_info[32]; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 108 | int state; |
| 109 | int power_unit; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 110 | u8 alarm_present; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | }; |
| 112 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 113 | #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat); |
| 114 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 115 | inline int acpi_battery_present(struct acpi_battery *battery) |
| 116 | { |
| 117 | return battery->device->status.battery_present; |
| 118 | } |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 119 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 120 | static int acpi_battery_technology(struct acpi_battery *battery) |
| 121 | { |
| 122 | if (!strcasecmp("NiCd", battery->type)) |
| 123 | return POWER_SUPPLY_TECHNOLOGY_NiCd; |
| 124 | if (!strcasecmp("NiMH", battery->type)) |
| 125 | return POWER_SUPPLY_TECHNOLOGY_NiMH; |
| 126 | if (!strcasecmp("LION", battery->type)) |
| 127 | return POWER_SUPPLY_TECHNOLOGY_LION; |
Alexey Starikovskiy | 0bde7ee | 2007-10-28 15:33:10 +0300 | [diff] [blame] | 128 | if (!strcasecmp("LI-ION", battery->type)) |
| 129 | return POWER_SUPPLY_TECHNOLOGY_LION; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 130 | if (!strcasecmp("LiP", battery->type)) |
| 131 | return POWER_SUPPLY_TECHNOLOGY_LIPO; |
| 132 | return POWER_SUPPLY_TECHNOLOGY_UNKNOWN; |
| 133 | } |
| 134 | |
Alexey Starikovskiy | b19073a | 2007-10-25 17:10:47 -0400 | [diff] [blame] | 135 | static int acpi_battery_update(struct acpi_battery *battery); |
| 136 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 137 | static int acpi_battery_get_property(struct power_supply *psy, |
| 138 | enum power_supply_property psp, |
| 139 | union power_supply_propval *val) |
| 140 | { |
| 141 | struct acpi_battery *battery = to_acpi_battery(psy); |
| 142 | |
| 143 | if ((!acpi_battery_present(battery)) && |
| 144 | psp != POWER_SUPPLY_PROP_PRESENT) |
| 145 | return -ENODEV; |
Alexey Starikovskiy | b19073a | 2007-10-25 17:10:47 -0400 | [diff] [blame] | 146 | acpi_battery_update(battery); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 147 | switch (psp) { |
| 148 | case POWER_SUPPLY_PROP_STATUS: |
| 149 | if (battery->state & 0x01) |
| 150 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
| 151 | else if (battery->state & 0x02) |
| 152 | val->intval = POWER_SUPPLY_STATUS_CHARGING; |
| 153 | else if (battery->state == 0) |
| 154 | val->intval = POWER_SUPPLY_STATUS_FULL; |
| 155 | break; |
| 156 | case POWER_SUPPLY_PROP_PRESENT: |
| 157 | val->intval = acpi_battery_present(battery); |
| 158 | break; |
| 159 | case POWER_SUPPLY_PROP_TECHNOLOGY: |
| 160 | val->intval = acpi_battery_technology(battery); |
| 161 | break; |
| 162 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: |
| 163 | val->intval = battery->design_voltage * 1000; |
| 164 | break; |
| 165 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| 166 | val->intval = battery->voltage_now * 1000; |
| 167 | break; |
| 168 | case POWER_SUPPLY_PROP_CURRENT_NOW: |
| 169 | val->intval = battery->current_now * 1000; |
| 170 | break; |
| 171 | case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN: |
| 172 | case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN: |
| 173 | val->intval = battery->design_capacity * 1000; |
| 174 | break; |
| 175 | case POWER_SUPPLY_PROP_CHARGE_FULL: |
| 176 | case POWER_SUPPLY_PROP_ENERGY_FULL: |
| 177 | val->intval = battery->full_charge_capacity * 1000; |
| 178 | break; |
| 179 | case POWER_SUPPLY_PROP_CHARGE_NOW: |
| 180 | case POWER_SUPPLY_PROP_ENERGY_NOW: |
| 181 | val->intval = battery->capacity_now * 1000; |
| 182 | break; |
| 183 | case POWER_SUPPLY_PROP_MODEL_NAME: |
| 184 | val->strval = battery->model_number; |
| 185 | break; |
| 186 | case POWER_SUPPLY_PROP_MANUFACTURER: |
| 187 | val->strval = battery->oem_info; |
| 188 | break; |
| 189 | default: |
| 190 | return -EINVAL; |
| 191 | } |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | static enum power_supply_property charge_battery_props[] = { |
| 196 | POWER_SUPPLY_PROP_STATUS, |
| 197 | POWER_SUPPLY_PROP_PRESENT, |
| 198 | POWER_SUPPLY_PROP_TECHNOLOGY, |
| 199 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 200 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 201 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 202 | POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, |
| 203 | POWER_SUPPLY_PROP_CHARGE_FULL, |
| 204 | POWER_SUPPLY_PROP_CHARGE_NOW, |
| 205 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 206 | POWER_SUPPLY_PROP_MANUFACTURER, |
| 207 | }; |
| 208 | |
| 209 | static enum power_supply_property energy_battery_props[] = { |
| 210 | POWER_SUPPLY_PROP_STATUS, |
| 211 | POWER_SUPPLY_PROP_PRESENT, |
| 212 | POWER_SUPPLY_PROP_TECHNOLOGY, |
| 213 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, |
| 214 | POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| 215 | POWER_SUPPLY_PROP_CURRENT_NOW, |
| 216 | POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, |
| 217 | POWER_SUPPLY_PROP_ENERGY_FULL, |
| 218 | POWER_SUPPLY_PROP_ENERGY_NOW, |
| 219 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 220 | POWER_SUPPLY_PROP_MANUFACTURER, |
| 221 | }; |
| 222 | |
| 223 | #ifdef CONFIG_ACPI_PROCFS |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 224 | inline char *acpi_battery_units(struct acpi_battery *battery) |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 225 | { |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 226 | return (battery->power_unit)?"mA":"mW"; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 227 | } |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 228 | #endif |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | /* -------------------------------------------------------------------------- |
| 231 | Battery Management |
| 232 | -------------------------------------------------------------------------- */ |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 233 | struct acpi_offsets { |
| 234 | size_t offset; /* offset inside struct acpi_sbs_battery */ |
| 235 | u8 mode; /* int or string? */ |
| 236 | }; |
| 237 | |
| 238 | static struct acpi_offsets state_offsets[] = { |
| 239 | {offsetof(struct acpi_battery, state), 0}, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 240 | {offsetof(struct acpi_battery, current_now), 0}, |
| 241 | {offsetof(struct acpi_battery, capacity_now), 0}, |
| 242 | {offsetof(struct acpi_battery, voltage_now), 0}, |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 243 | }; |
| 244 | |
| 245 | static struct acpi_offsets info_offsets[] = { |
| 246 | {offsetof(struct acpi_battery, power_unit), 0}, |
| 247 | {offsetof(struct acpi_battery, design_capacity), 0}, |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 248 | {offsetof(struct acpi_battery, full_charge_capacity), 0}, |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 249 | {offsetof(struct acpi_battery, technology), 0}, |
| 250 | {offsetof(struct acpi_battery, design_voltage), 0}, |
| 251 | {offsetof(struct acpi_battery, design_capacity_warning), 0}, |
| 252 | {offsetof(struct acpi_battery, design_capacity_low), 0}, |
| 253 | {offsetof(struct acpi_battery, capacity_granularity_1), 0}, |
| 254 | {offsetof(struct acpi_battery, capacity_granularity_2), 0}, |
| 255 | {offsetof(struct acpi_battery, model_number), 1}, |
| 256 | {offsetof(struct acpi_battery, serial_number), 1}, |
| 257 | {offsetof(struct acpi_battery, type), 1}, |
| 258 | {offsetof(struct acpi_battery, oem_info), 1}, |
| 259 | }; |
| 260 | |
| 261 | static int extract_package(struct acpi_battery *battery, |
| 262 | union acpi_object *package, |
| 263 | struct acpi_offsets *offsets, int num) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 264 | { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 265 | int i; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 266 | union acpi_object *element; |
| 267 | if (package->type != ACPI_TYPE_PACKAGE) |
| 268 | return -EFAULT; |
| 269 | for (i = 0; i < num; ++i) { |
| 270 | if (package->package.count <= i) |
| 271 | return -EFAULT; |
| 272 | element = &package->package.elements[i]; |
| 273 | if (offsets[i].mode) { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 274 | u8 *ptr = (u8 *)battery + offsets[i].offset; |
| 275 | if (element->type == ACPI_TYPE_STRING || |
| 276 | element->type == ACPI_TYPE_BUFFER) |
| 277 | strncpy(ptr, element->string.pointer, 32); |
| 278 | else if (element->type == ACPI_TYPE_INTEGER) { |
| 279 | strncpy(ptr, (u8 *)&element->integer.value, |
| 280 | sizeof(acpi_integer)); |
| 281 | ptr[sizeof(acpi_integer)] = 0; |
| 282 | } else return -EFAULT; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 283 | } else { |
Alexey Starikovskiy | 106449e | 2007-10-29 23:29:40 +0300 | [diff] [blame] | 284 | if (element->type == ACPI_TYPE_INTEGER) { |
| 285 | int *x = (int *)((u8 *)battery + |
| 286 | offsets[i].offset); |
| 287 | *x = element->integer.value; |
| 288 | } else return -EFAULT; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 289 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 290 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static int acpi_battery_get_status(struct acpi_battery *battery) |
| 295 | { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 296 | if (acpi_bus_get_status(battery->device)) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 297 | ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA")); |
| 298 | return -ENODEV; |
| 299 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 300 | return 0; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | static int acpi_battery_get_info(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 305 | int result = -EFAULT; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 306 | acpi_status status = 0; |
| 307 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 309 | if (!acpi_battery_present(battery)) |
| 310 | return 0; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 311 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 312 | status = acpi_evaluate_object(battery->device->handle, "_BIF", |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 313 | NULL, &buffer); |
| 314 | mutex_unlock(&battery->lock); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 317 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 318 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 320 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 321 | result = extract_package(battery, buffer.pointer, |
| 322 | info_offsets, ARRAY_SIZE(info_offsets)); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 323 | kfree(buffer.pointer); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 324 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | } |
| 326 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 327 | static int acpi_battery_get_state(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 329 | int result = 0; |
| 330 | acpi_status status = 0; |
| 331 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 333 | if (!acpi_battery_present(battery)) |
| 334 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 336 | if (battery->update_time && |
| 337 | time_before(jiffies, battery->update_time + |
| 338 | msecs_to_jiffies(cache_time))) |
| 339 | return 0; |
| 340 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 341 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 342 | status = acpi_evaluate_object(battery->device->handle, "_BST", |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 343 | NULL, &buffer); |
| 344 | mutex_unlock(&battery->lock); |
Len Brown | 5b31d89 | 2007-08-15 00:19:26 -0400 | [diff] [blame] | 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | if (ACPI_FAILURE(status)) { |
Thomas Renninger | a6fc672 | 2006-06-26 23:58:43 -0400 | [diff] [blame] | 347 | ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 348 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 350 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 351 | result = extract_package(battery, buffer.pointer, |
| 352 | state_offsets, ARRAY_SIZE(state_offsets)); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 353 | battery->update_time = jiffies; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 354 | kfree(buffer.pointer); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 355 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | } |
| 357 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 358 | static int acpi_battery_set_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 360 | acpi_status status = 0; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 361 | union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER }; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 362 | struct acpi_object_list arg_list = { 1, &arg0 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 364 | if (!acpi_battery_present(battery)|| !battery->alarm_present) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 365 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 367 | arg0.integer.value = battery->alarm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 369 | mutex_lock(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 370 | status = acpi_evaluate_object(battery->device->handle, "_BTP", |
| 371 | &arg_list, NULL); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 372 | mutex_unlock(&battery->lock); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 373 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | if (ACPI_FAILURE(status)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 375 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 377 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Alarm set to %d\n", battery->alarm)); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 378 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | } |
| 380 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 381 | static int acpi_battery_init_alarm(struct acpi_battery *battery) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 383 | acpi_status status = AE_OK; |
| 384 | acpi_handle handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 386 | /* See if alarms are supported, and if so, set default */ |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 387 | status = acpi_get_handle(battery->device->handle, "_BTP", &handle); |
| 388 | if (ACPI_FAILURE(status)) { |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 389 | battery->alarm_present = 0; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 390 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | } |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 392 | battery->alarm_present = 1; |
| 393 | if (!battery->alarm) |
| 394 | battery->alarm = battery->design_capacity_warning; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 395 | return acpi_battery_set_alarm(battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
| 397 | |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 398 | static ssize_t acpi_battery_alarm_show(struct device *dev, |
| 399 | struct device_attribute *attr, |
| 400 | char *buf) |
| 401 | { |
| 402 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); |
| 403 | return sprintf(buf, "%d\n", battery->alarm * 1000); |
| 404 | } |
| 405 | |
| 406 | static ssize_t acpi_battery_alarm_store(struct device *dev, |
| 407 | struct device_attribute *attr, |
| 408 | const char *buf, size_t count) |
| 409 | { |
| 410 | unsigned long x; |
| 411 | struct acpi_battery *battery = to_acpi_battery(dev_get_drvdata(dev)); |
| 412 | if (sscanf(buf, "%ld\n", &x) == 1) |
| 413 | battery->alarm = x/1000; |
| 414 | if (acpi_battery_present(battery)) |
| 415 | acpi_battery_set_alarm(battery); |
| 416 | return count; |
| 417 | } |
| 418 | |
| 419 | static struct device_attribute alarm_attr = { |
| 420 | .attr = {.name = "alarm", .mode = 0644, .owner = THIS_MODULE}, |
| 421 | .show = acpi_battery_alarm_show, |
| 422 | .store = acpi_battery_alarm_store, |
| 423 | }; |
| 424 | |
| 425 | static int sysfs_add_battery(struct acpi_battery *battery) |
| 426 | { |
| 427 | int result; |
| 428 | |
| 429 | battery->update_time = 0; |
| 430 | result = acpi_battery_get_info(battery); |
| 431 | acpi_battery_init_alarm(battery); |
| 432 | if (result) |
| 433 | return result; |
| 434 | if (battery->power_unit) { |
| 435 | battery->bat.properties = charge_battery_props; |
| 436 | battery->bat.num_properties = |
| 437 | ARRAY_SIZE(charge_battery_props); |
| 438 | } else { |
| 439 | battery->bat.properties = energy_battery_props; |
| 440 | battery->bat.num_properties = |
| 441 | ARRAY_SIZE(energy_battery_props); |
| 442 | } |
| 443 | |
| 444 | battery->bat.name = acpi_device_bid(battery->device); |
| 445 | battery->bat.type = POWER_SUPPLY_TYPE_BATTERY; |
| 446 | battery->bat.get_property = acpi_battery_get_property; |
| 447 | |
| 448 | result = power_supply_register(&battery->device->dev, &battery->bat); |
| 449 | if (result) |
| 450 | return result; |
| 451 | return device_create_file(battery->bat.dev, &alarm_attr); |
| 452 | } |
| 453 | |
| 454 | static void sysfs_remove_battery(struct acpi_battery *battery) |
| 455 | { |
| 456 | if (!battery->bat.dev) |
| 457 | return; |
| 458 | device_remove_file(battery->bat.dev, &alarm_attr); |
| 459 | power_supply_unregister(&battery->bat); |
| 460 | } |
| 461 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 462 | static int acpi_battery_update(struct acpi_battery *battery) |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 463 | { |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 464 | int result = acpi_battery_get_status(battery); |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 465 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 466 | return result; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 467 | if (!acpi_battery_present(battery)) { |
| 468 | sysfs_remove_battery(battery); |
| 469 | return 0; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 470 | } |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 471 | if (!battery->bat.dev) |
| 472 | sysfs_add_battery(battery); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 473 | return acpi_battery_get_state(battery); |
Vladimir Lebedev | 4bd35cd | 2007-02-10 01:43:48 -0500 | [diff] [blame] | 474 | } |
| 475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | /* -------------------------------------------------------------------------- |
| 477 | FS Interface (/proc) |
| 478 | -------------------------------------------------------------------------- */ |
| 479 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 480 | #ifdef CONFIG_ACPI_PROCFS |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 481 | static struct proc_dir_entry *acpi_battery_dir; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 482 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 483 | static int acpi_battery_print_info(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 485 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 487 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | goto end; |
| 489 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 490 | seq_printf(seq, "present: %s\n", |
| 491 | acpi_battery_present(battery)?"yes":"no"); |
| 492 | if (!acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | goto end; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 494 | if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | seq_printf(seq, "design capacity: unknown\n"); |
| 496 | else |
| 497 | seq_printf(seq, "design capacity: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 498 | battery->design_capacity, |
| 499 | acpi_battery_units(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 501 | if (battery->full_charge_capacity == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | seq_printf(seq, "last full capacity: unknown\n"); |
| 503 | else |
| 504 | seq_printf(seq, "last full capacity: %d %sh\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 505 | battery->full_charge_capacity, |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 506 | acpi_battery_units(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 508 | seq_printf(seq, "battery technology: %srechargeable\n", |
| 509 | (!battery->technology)?"non-":""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 511 | if (battery->design_voltage == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | seq_printf(seq, "design voltage: unknown\n"); |
| 513 | else |
| 514 | seq_printf(seq, "design voltage: %d mV\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 515 | battery->design_voltage); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 516 | seq_printf(seq, "design capacity warning: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 517 | battery->design_capacity_warning, |
| 518 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 519 | seq_printf(seq, "design capacity low: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 520 | battery->design_capacity_low, |
| 521 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 522 | seq_printf(seq, "capacity granularity 1: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 523 | battery->capacity_granularity_1, |
| 524 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 525 | seq_printf(seq, "capacity granularity 2: %d %sh\n", |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 526 | battery->capacity_granularity_2, |
| 527 | acpi_battery_units(battery)); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 528 | seq_printf(seq, "model number: %s\n", battery->model_number); |
| 529 | seq_printf(seq, "serial number: %s\n", battery->serial_number); |
| 530 | seq_printf(seq, "battery type: %s\n", battery->type); |
| 531 | seq_printf(seq, "OEM info: %s\n", battery->oem_info); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 532 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 533 | if (result) |
| 534 | seq_printf(seq, "ERROR: Unable to read battery info\n"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 535 | return result; |
| 536 | } |
| 537 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 538 | static int acpi_battery_print_state(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 540 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 542 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | goto end; |
| 544 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 545 | seq_printf(seq, "present: %s\n", |
| 546 | acpi_battery_present(battery)?"yes":"no"); |
| 547 | if (!acpi_battery_present(battery)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 550 | seq_printf(seq, "capacity state: %s\n", |
| 551 | (battery->state & 0x04)?"critical":"ok"); |
| 552 | if ((battery->state & 0x01) && (battery->state & 0x02)) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 553 | seq_printf(seq, |
| 554 | "charging state: charging/discharging\n"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 555 | else if (battery->state & 0x01) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | seq_printf(seq, "charging state: discharging\n"); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 557 | else if (battery->state & 0x02) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | seq_printf(seq, "charging state: charging\n"); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 559 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | seq_printf(seq, "charging state: charged\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 562 | if (battery->current_now == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | seq_printf(seq, "present rate: unknown\n"); |
| 564 | else |
| 565 | seq_printf(seq, "present rate: %d %s\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 566 | battery->current_now, acpi_battery_units(battery)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 568 | if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | seq_printf(seq, "remaining capacity: unknown\n"); |
| 570 | else |
| 571 | seq_printf(seq, "remaining capacity: %d %sh\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 572 | battery->capacity_now, acpi_battery_units(battery)); |
| 573 | if (battery->voltage_now == ACPI_BATTERY_VALUE_UNKNOWN) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | seq_printf(seq, "present voltage: unknown\n"); |
| 575 | else |
| 576 | seq_printf(seq, "present voltage: %d mV\n", |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 577 | battery->voltage_now); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 578 | end: |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 579 | if (result) |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 580 | seq_printf(seq, "ERROR: Unable to read battery state\n"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 581 | |
| 582 | return result; |
| 583 | } |
| 584 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 585 | static int acpi_battery_print_alarm(struct seq_file *seq, int result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 587 | struct acpi_battery *battery = seq->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 589 | if (result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | goto end; |
| 591 | |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 592 | if (!acpi_battery_present(battery)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | seq_printf(seq, "present: no\n"); |
| 594 | goto end; |
| 595 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | seq_printf(seq, "alarm: "); |
| 597 | if (!battery->alarm) |
| 598 | seq_printf(seq, "unsupported\n"); |
| 599 | else |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 600 | seq_printf(seq, "%u %sh\n", battery->alarm, |
| 601 | acpi_battery_units(battery)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 602 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 603 | if (result) |
| 604 | seq_printf(seq, "ERROR: Unable to read battery alarm\n"); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 605 | return result; |
| 606 | } |
| 607 | |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 608 | static ssize_t acpi_battery_write_alarm(struct file *file, |
| 609 | const char __user * buffer, |
| 610 | size_t count, loff_t * ppos) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 612 | int result = 0; |
| 613 | char alarm_string[12] = { '\0' }; |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 614 | struct seq_file *m = file->private_data; |
| 615 | struct acpi_battery *battery = m->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | if (!battery || (count > sizeof(alarm_string) - 1)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 618 | return -EINVAL; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 619 | if (!acpi_battery_present(battery)) { |
| 620 | result = -ENODEV; |
| 621 | goto end; |
| 622 | } |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 623 | if (copy_from_user(alarm_string, buffer, count)) { |
| 624 | result = -EFAULT; |
| 625 | goto end; |
| 626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | alarm_string[count] = '\0'; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 628 | battery->alarm = simple_strtol(alarm_string, NULL, 0); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 629 | result = acpi_battery_set_alarm(battery); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 630 | end: |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 631 | if (!result) |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 632 | return count; |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 633 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | } |
| 635 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 636 | typedef int(*print_func)(struct seq_file *seq, int result); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 637 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 638 | static print_func acpi_print_funcs[ACPI_BATTERY_NUMFILES] = { |
| 639 | acpi_battery_print_info, |
| 640 | acpi_battery_print_state, |
| 641 | acpi_battery_print_alarm, |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 642 | }; |
| 643 | |
| 644 | static int acpi_battery_read(int fid, struct seq_file *seq) |
| 645 | { |
| 646 | struct acpi_battery *battery = seq->private; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 647 | int result = acpi_battery_update(battery); |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 648 | return acpi_print_funcs[fid](seq, result); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 649 | } |
| 650 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 651 | #define DECLARE_FILE_FUNCTIONS(_name) \ |
| 652 | static int acpi_battery_read_##_name(struct seq_file *seq, void *offset) \ |
| 653 | { \ |
| 654 | return acpi_battery_read(_name##_tag, seq); \ |
| 655 | } \ |
| 656 | static int acpi_battery_##_name##_open_fs(struct inode *inode, struct file *file) \ |
| 657 | { \ |
| 658 | return single_open(file, acpi_battery_read_##_name, PDE(inode)->data); \ |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 659 | } |
| 660 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 661 | DECLARE_FILE_FUNCTIONS(info); |
| 662 | DECLARE_FILE_FUNCTIONS(state); |
| 663 | DECLARE_FILE_FUNCTIONS(alarm); |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 664 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 665 | #undef DECLARE_FILE_FUNCTIONS |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 666 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 667 | #define FILE_DESCRIPTION_RO(_name) \ |
| 668 | { \ |
| 669 | .name = __stringify(_name), \ |
| 670 | .mode = S_IRUGO, \ |
| 671 | .ops = { \ |
| 672 | .open = acpi_battery_##_name##_open_fs, \ |
| 673 | .read = seq_read, \ |
| 674 | .llseek = seq_lseek, \ |
| 675 | .release = single_release, \ |
| 676 | .owner = THIS_MODULE, \ |
| 677 | }, \ |
| 678 | } |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 679 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 680 | #define FILE_DESCRIPTION_RW(_name) \ |
| 681 | { \ |
| 682 | .name = __stringify(_name), \ |
| 683 | .mode = S_IFREG | S_IRUGO | S_IWUSR, \ |
| 684 | .ops = { \ |
| 685 | .open = acpi_battery_##_name##_open_fs, \ |
| 686 | .read = seq_read, \ |
| 687 | .llseek = seq_lseek, \ |
| 688 | .write = acpi_battery_write_##_name, \ |
| 689 | .release = single_release, \ |
| 690 | .owner = THIS_MODULE, \ |
| 691 | }, \ |
| 692 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 694 | static struct battery_file { |
| 695 | struct file_operations ops; |
| 696 | mode_t mode; |
| 697 | char *name; |
| 698 | } acpi_battery_file[] = { |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 699 | FILE_DESCRIPTION_RO(info), |
| 700 | FILE_DESCRIPTION_RO(state), |
| 701 | FILE_DESCRIPTION_RW(alarm), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | }; |
| 703 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 704 | #undef FILE_DESCRIPTION_RO |
| 705 | #undef FILE_DESCRIPTION_RW |
| 706 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 707 | static int acpi_battery_add_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 709 | struct proc_dir_entry *entry = NULL; |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 710 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | if (!acpi_device_dir(device)) { |
| 713 | acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 714 | acpi_battery_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | if (!acpi_device_dir(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 716 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | acpi_device_dir(device)->owner = THIS_MODULE; |
| 718 | } |
| 719 | |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 720 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) { |
| 721 | entry = create_proc_entry(acpi_battery_file[i].name, |
| 722 | acpi_battery_file[i].mode, acpi_device_dir(device)); |
| 723 | if (!entry) |
| 724 | return -ENODEV; |
| 725 | else { |
| 726 | entry->proc_fops = &acpi_battery_file[i].ops; |
| 727 | entry->data = acpi_driver_data(device); |
| 728 | entry->owner = THIS_MODULE; |
| 729 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 731 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | } |
| 733 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 734 | static void acpi_battery_remove_fs(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | { |
Alexey Starikovskiy | 78490d8 | 2007-05-11 13:18:55 -0400 | [diff] [blame] | 736 | int i; |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 737 | if (!acpi_device_dir(device)) |
| 738 | return; |
| 739 | for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) |
| 740 | remove_proc_entry(acpi_battery_file[i].name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | acpi_device_dir(device)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 743 | remove_proc_entry(acpi_device_bid(device), acpi_battery_dir); |
| 744 | acpi_device_dir(device) = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | } |
| 746 | |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 747 | #endif |
Alexey Starikovskiy | 3e58ea0 | 2007-09-26 19:43:11 +0400 | [diff] [blame] | 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | /* -------------------------------------------------------------------------- |
| 750 | Driver Interface |
| 751 | -------------------------------------------------------------------------- */ |
| 752 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 753 | static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | { |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 755 | struct acpi_battery *battery = data; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 756 | struct acpi_device *device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 758 | return; |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 759 | device = battery->device; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 760 | acpi_battery_update(battery); |
| 761 | acpi_bus_generate_proc_event(device, event, |
| 762 | acpi_battery_present(battery)); |
| 763 | acpi_bus_generate_netlink_event(device->pnp.device_class, |
| 764 | device->dev.bus_id, event, |
Vladimir Lebedev | 9ea7d57 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 765 | acpi_battery_present(battery)); |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 766 | /* acpi_batter_update could remove power_supply object */ |
| 767 | if (battery->bat.dev) |
| 768 | kobject_uevent(&battery->bat.dev->kobj, KOBJ_CHANGE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | } |
| 770 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 771 | static int acpi_battery_add(struct acpi_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 773 | int result = 0; |
| 774 | acpi_status status = 0; |
| 775 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | if (!device) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 777 | return -EINVAL; |
Burman Yan | 36bcbec | 2006-12-19 12:56:11 -0800 | [diff] [blame] | 778 | battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | if (!battery) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 780 | return -ENOMEM; |
Patrick Mochel | 145def8 | 2006-05-19 16:54:39 -0400 | [diff] [blame] | 781 | battery->device = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); |
| 783 | strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); |
| 784 | acpi_driver_data(device) = battery; |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 785 | mutex_init(&battery->lock); |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 786 | acpi_battery_update(battery); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 787 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | result = acpi_battery_add_fs(device); |
| 789 | if (result) |
| 790 | goto end; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 791 | #endif |
Patrick Mochel | 3b073ec | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 792 | status = acpi_install_notify_handler(device->handle, |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 793 | ACPI_ALL_NOTIFY, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 794 | acpi_battery_notify, battery); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | if (ACPI_FAILURE(status)) { |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 796 | ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler")); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | result = -ENODEV; |
| 798 | goto end; |
| 799 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 801 | ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), |
| 802 | device->status.battery_present ? "present" : "absent"); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 803 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | if (result) { |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 805 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | acpi_battery_remove_fs(device); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 807 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | kfree(battery); |
| 809 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 810 | return result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | } |
| 812 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 813 | static int acpi_battery_remove(struct acpi_device *device, int type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 815 | acpi_status status = 0; |
| 816 | struct acpi_battery *battery = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | if (!device || !acpi_driver_data(device)) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 819 | return -EINVAL; |
Jan Engelhardt | 50dd096 | 2006-10-01 00:28:50 +0200 | [diff] [blame] | 820 | battery = acpi_driver_data(device); |
Patrick Mochel | 3b073ec | 2006-05-19 16:54:41 -0400 | [diff] [blame] | 821 | status = acpi_remove_notify_handler(device->handle, |
Vladimir Lebedev | 9fdae72 | 2006-06-27 04:49:00 -0400 | [diff] [blame] | 822 | ACPI_ALL_NOTIFY, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 823 | acpi_battery_notify); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 824 | #ifdef CONFIG_ACPI_PROCFS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | acpi_battery_remove_fs(device); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 826 | #endif |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 827 | sysfs_remove_battery(battery); |
Alexey Starikovskiy | 038fdea | 2007-09-26 19:42:46 +0400 | [diff] [blame] | 828 | mutex_destroy(&battery->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | kfree(battery); |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 830 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | } |
| 832 | |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 833 | /* this is needed to learn about changes made in suspended state */ |
Patrick Mochel | 5d9464a | 2006-12-07 20:56:27 +0800 | [diff] [blame] | 834 | static int acpi_battery_resume(struct acpi_device *device) |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 835 | { |
| 836 | struct acpi_battery *battery; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 837 | if (!device) |
| 838 | return -EINVAL; |
Alexey Starikovskiy | f1d4661 | 2007-09-26 19:42:52 +0400 | [diff] [blame] | 839 | battery = acpi_driver_data(device); |
| 840 | battery->update_time = 0; |
Andrey Borzenkov | 508df92 | 2007-10-28 12:50:09 +0300 | [diff] [blame] | 841 | acpi_battery_update(battery); |
Vladimir Lebedev | b6ce408 | 2007-02-20 15:48:06 +0300 | [diff] [blame] | 842 | return 0; |
Jiri Kosina | 34c4415 | 2006-10-10 14:20:41 -0700 | [diff] [blame] | 843 | } |
| 844 | |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 845 | static struct acpi_driver acpi_battery_driver = { |
| 846 | .name = "battery", |
| 847 | .class = ACPI_BATTERY_CLASS, |
| 848 | .ids = battery_device_ids, |
| 849 | .ops = { |
| 850 | .add = acpi_battery_add, |
| 851 | .resume = acpi_battery_resume, |
| 852 | .remove = acpi_battery_remove, |
| 853 | }, |
| 854 | }; |
| 855 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 856 | static int __init acpi_battery_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | { |
Pavel Machek | 4d8316d | 2006-08-14 22:37:22 -0700 | [diff] [blame] | 858 | if (acpi_disabled) |
| 859 | return -ENODEV; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 860 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 861 | acpi_battery_dir = acpi_lock_battery_dir(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | if (!acpi_battery_dir) |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 863 | return -ENODEV; |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 864 | #endif |
Alexey Starikovskiy | aa650bb | 2007-09-26 19:42:58 +0400 | [diff] [blame] | 865 | if (acpi_bus_register_driver(&acpi_battery_driver) < 0) { |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 866 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 867 | acpi_unlock_battery_dir(acpi_battery_dir); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 868 | #endif |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 869 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | } |
Patrick Mochel | d550d98 | 2006-06-27 00:41:40 -0400 | [diff] [blame] | 871 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | } |
| 873 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 874 | static void __exit acpi_battery_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | acpi_bus_unregister_driver(&acpi_battery_driver); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 877 | #ifdef CONFIG_ACPI_PROCFS |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 878 | acpi_unlock_battery_dir(acpi_battery_dir); |
Alexey Starikovskiy | d738096 | 2007-09-26 19:43:04 +0400 | [diff] [blame] | 879 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | } |
| 881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | module_init(acpi_battery_init); |
| 883 | module_exit(acpi_battery_exit); |